Apple Lisa computer

I have an original Lisa, which is rare because Apple offered a free
upgrade to the Lisa 2.

I also have several Lisa 2s, which were later known as the Macintosh XL.

The original Lisa contained two Apple-proprietary
Twiggy 5.25 inch floppy disk drives, with a
storage capacity of 880 Kbytes each. However, these drives were found
to be somewhat unreliable in practice, so the Lisa 2 used a single Sony
3.5 inch floppy drive instead.

Simulation:

There are not yet any Lisa simulators, but several people are working on
them: